The purpose of a music promotional video

The purpose of a promotional music video is to promote brand names that have products placed within them.

This gives the product Publicity whilst increasing sales. Due to the branding and sponsorship the artist also gains a larger audience due to publicity. The audience is also introduced to the artist raising awareness of them.

Beats by Dre is a very large brand placing itself within videos, examples such as;

The product placement in the above video's is extremely clear, usually taking up the entire screen.

Synergy.

A music video is only one brand of multimedia and not the only way promotion is done, other methods are;

Radio

Television

Print Media

Film

Films are often used in synergy to music, being the largest synergiser. Music that is made in synergy to a film often contains clips from the film, or is shot on the same location, Adele sky fall was made for the recent James Bond movie, being entirely from the movie and not actually containing her.

Another example is wet wet wet love is all around me.

This is because it was used in "four weddings and a funeral" the music video contains scenes from both the band and from the movie, synergising them very closely. The single was released before the film came out but it didn't quite reach instant success off the bat. It was not very well received until the film was released which caused the sales to skyrocket tremendously. After the films release the song remained at number one for 15 consecutive weeks. Thanks to this brilliant use of synergy, this song remains the second song to remain at the top of the chart for the longest time.

This was only beaten by Bryan Adam's everything I do-

This song remained number one for 16 weeks, beating wet wet wet by a week. Everything I do featured in the Robin hood movie, a widely successful movie that made a widely successful song.